James M. Allwin, president of Aetos Capital, LLC, an investment management firm based in New York, has donated $10 million to the School of Medicine to attract more of the world’s best clinicians and clinical researchers to Yale. Allwin, a resident of Greenwich, Conn., who serves on the board of the Yale New Haven Health System and on the advisory board of the Howard Hughes Medical Institute, says that his gift mirrors the philosophy he employs in his business: “It’s my hope that by investing in